If science is the language that moves you, and for many of us, it is just that, then you really might want to visit some of the San Francisco museums that focus on science more than art. I find both to be of equal importance but there are those, many in fact, that would disagree with me. Whatever your feelings about it, if you have a child that you want to encourage to pay more attention to science courses in school, it is an excellent idea to take them to a museum such as this in order to fan that flame of curiosity.
Science answers many questions about the past and offers many hints at the future of our world and universe. Without science there is much we wouldn't know and even more that we would not understand. I think any of use would be hard pressed to identify the single most important scientific discovery throughout history.

There are so many things that are all very significant to the very lives we enjoy today and yet each and every scientific discovery happened because someone, somewhere, asked a question.
I find that truly amazing. When you think about it; physics, chemistry, mathematics, astronomy, none of these things would be studied today if someone hadn't found them curious at some point in history. That is precisely why I believe that museums such as the Exploratorium are so important in developing future scientist. If we spark the curiosity in our children at young ages there is nothing to prevent them from great discoveries later on.

The Exploratorium encourages children to explore the world around them, even how science affects other things they enjoy (such as skateboarding). If you can use a skateboard to teach physics, imagine what you can do with a car.
The Morrison Planetarium is a great place to take the family if you are truly interested in seeing the stars. I'm not talking Hollywood starlets but real stars. If you or one of your children has the slightest interest in studying the stars, this will be a treat for you all. I sincerely hope you will at least check it out.
The Natural History Museum offers many exhibits that deal with various aspects of life. Perhaps the neatest thing about the Natural History Museum is the fact that you are allowed a very hands on approach to learning here. From actually handling fossils and skulls to really cool artifacts, very little is off limits. This means that even the most difficult child to amuse might find something of interest here; at least, that is the hope.

Finally, there is the Steinhart Aquarium. This is not the Aquarium at the Bay but a municipal aquarium that holds the distinction of being the oldest operating municipal aquarium in America. Among the awesome exhibits that can be found here are several rare specimens that can no longer be found in the wild. The tide pool is perhaps one of the most anticipated attractions of this aquarium. This is where little hands actually get to touch some of the animals that their little eyes are watching in the tanks. Just be careful that you aren't going home with a car full of future marine biologists as this experience can ignite a passion for marine life that will last for quite a while.
Science is a great thing to be studied and explored. I can think of few things I would rather see my children pursue than an endless search for truth and the evidence to support those truths. I hope that by introducing them to opportunities such as these I will have contributed to a life long process of seeking answers that will serve them well. And it can all be owed to a trip to San Francisco.